The new Rokinon 24mm F1.4 Aspherical Wide Angle Lens is constructed of 13 elements in 12 groups with 4 lenses made of low dispersion ED glass and two lenses of aspheric glass.Images come out super sharp and clear.The lens is optically designed to work with all digital SLR cameras.On full frame cameras, it will function as a high quality, ultra fast wide angle lens that is ideal for street, landscape and architectural photography.On cropped sensors, the lens will act as an excellent lens for sharp, clear and calmer photography.The lens is also perfect for videographers and video enthusiasts who enjoy high definition & ultra clear video.

Other Comments: I bought with lots of hope to shoot low light, but was totally dissapointed with manual focus. Unless u've worked with m/focus lenses, stay away!
At f/1.4-1.8, getting manual focus right on a moving subjects (kids et el) is strict no/no with 8/10 pics being OOF.